Device for avoiding errors in delivering fluid to a container
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United States of America Patent
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May 29, 2012
Grant Date -
Oct 2, 2008
app pub date -
Mar 31, 2008
filing date -
Mar 31, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Device for avoiding fluid delivery errors, comprising a primary coil (6), placed in a container (1) in the vicinity of a fluid delivery orifice (2) of the container, a control and measurement electric circuit (7) supplying power to the primary coil (6) to generate electromagnetic waves in the fluid delivery orifice (2), detector means (7, 8) sensitive to the waveform of the currents or voltages that appear in the primary coil (6) and that distinguish the presence and the type of fluid delivery nozzle (4) as a function of said waveform of the currents or voltages in the primary coil (6). Comparator means (11) determine if the measured oscillation frequency (fm) is different from a reference oscillation frequency (fr). If necessary, the user is warned, by alarm means (12), that he is about to fill his container (1) with the wrong type of fluid.
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